Pallet-cleaning machine.



J. S. COLLINS. PALLET CLEANING MACHINE. APPLICATION FILED FEB.21,1911.

Patentd N0v.26,1912.

2 SHEETS-SHEET l.

Inventor @i' @ZZZ Attrns Witnesses J. S. COLLINS.

PALLET CLEANING MACHINE.

APPLICATION FILED FEB.21,1911.

L4c5$577l Patented Nov. 26, 1912.

2 SHEETSSHEET 2.

Inventor JOHN s. COLLINS, or nnwrs' rowiv, r nnnsrnvanml PALLET-CLEANINGMACHINE.

mam

To all whom it may concern; I Be it known that 1, JOHN S. GOLLINs, acitizen of the UnitedStates, residing at Lew.-

istown, in the county of Mifliin and State of Pennsylvania, haveinvented a new and useful Pallet-Cleaning Machine, of which thefollowing is a specification.

This invention relates to machines for cleaning metal pallets such asused in the manufacture of what is commonly known as sand brick.

It has been found, in the manufacture of bricks ofthis type that adeposit is left by the bricks upon the pallet and this deposit adheresto the pallet with such tenacityas' iently adjusted, said machinerequiring but tion of one side of the machine.

formed with an elongatedv opening 4 in the,

little power to operate it. p With the foregoing and other objects inview which will appear as the description proceeds, the inventionresides in thecomblnation and arrangement of parts and in the.

details of. construction hereinafter described and claimed, it beingunderstood that changes in the precise embodiment of invention hereindisclosed can be made within the scope of whatis claimed without-dc:partin from the spirit of the invention.

In t e accompanying drawin s the preferred form of the invention hasbeenshown. In said drawings :-'Figure' 1 is an elevaan'elevatio'n of theother side thereof. Fig.

' 3 is a plan view, aportion of the frame being broken away. -Fig. 4 isan enlarged detail view of the bearings at one end of one pair of rolls.i

Referring to the figures by characters of reference 1 designates theframe of'the machine, the same being mounted onsuitable su ports 2 andhaving standards 3 upon the sidbs thereof. Each oftheSe standards is v uper portion thereof and within which is shdably mounted a box 5. held byupper and lower adjusting screws 6 these screws engag the standards andbeing readily acces- Specification of Letters Eatent. Application filedFebruary 21, 1911. Serial No. 610,016.

'naled within Fig. 2 is sible for the purpose ofshifting the boxvertically. y

' The boxes 5 constitute bearings for a shaft 7 and this shaft has a hub8 formed with radial wings 9 extending longitudinally thereof, thesewings being preferably located 90 degrees apart and those faces of thehub between the wings being preferably concaved longitudinally asindicated at 10. A cleaning blade 11 of steel or other suitable hardmetal is bolted to each flange and a shoulder 12 is formed upon the hubalong the base of each flange 9 and constitutes an abutment for theadjacent blade 11. These blades are all of the same proportions and theouter or working. edges thereofare all the same distance from the axisof the shaft 7. It is to be understood that the blades are detachablyheld u n the flanges, bolts13 or the like being utihzed for thispurpose.

Brackets 14 are secured upon the sides of frame 1 adjacent the-endsthereof and constitute bearings for rolls 15 extending transversely ofthe frame. Another roll 16 is arranged transversely of frame 1 betweenthe standards 3 and is journaled within spring plates 17 bolted orotherwise fastened, at one'end, to supporting blocks 18 mounted on theframe. It will thus be seen that the roll 16 is yieldingly supported.Arranged between roll 16 and each roll 15 is a pair of rolls 19 and .20arranged one abovethe other, each roll 19 being jourplates 21 secured tothe sides of the frame 1 while each roll 20 is journaled within plates22 mounted on guide --rods 23 and 24. A spring 25 is mounted on each rod23 and bears at its ends against the plates 21 and 22, thus constitutinga yielding support for the plate 22. Another spring 26 is mounted on theupper end portion-of each rod 24 and bears at one end against a head 27-on the rod and at its other end, upon the upper face of plate'22, thusoperating to hold'the upper roll, .20 yieldingly in contact with thelower roll 19. The roll 20 at one end of the machine has a sprocket 28engaged by the upper run of anendless chain 29, this chain being-mountedon a sprocket 30 connected to one end of .shaft 7 and upon a much largersprocket 31 secured to a drive shaft 32 extending under the frame 1 andtransversely'thereof.

A pulley 33 is connected to the shaft 32 and is adapted to receivemotion from a belt, not shotwn, and driven by anysuitable m0- Patna Nov.2c, 1912*.

ioa

tor. It is to be understood, however, that, if preferred, a pulley maybe secured to .shaft 7 and power applied to the machine I at that pointrather than to the shaft'32.

A sprocket 34 is secured to shaft 32 adjacent pulley 33 and drives achain 35 mounted on a sprocket 36 which is secured to the 7 roll 19located under that roll 20 to which the sprocket 28 is connected. Asmall sprocket 37 is secured to the same roll as is sprocket 36 andtransmits motion through an endless chain 38 to a sprocket 39 secured tothe other roll 19.

A lever 10 is pivotally connected to one end portion of frame 1 andcarries a roller 41 bearing downwardly on that portion of chain 39located between sprockets 28 and thus take up slack therein and cause itto firmly engage the sprocket 28.

In operation, motion is transmitted from sprocket 31 to sprocket 30through chain 29 and the series of blades 11 is thus caused to rotate ata high speed. The rolls 19 are both rotated in the same direction andchain 29 cooperates with sprocket 28 to rotate the adjacent roll 20 atthe same speed but in the opposite direction. The pallet to be cleanedis placed on roll 15 at one end of the machine and fed to the passbetween adjacent'rolls 19 and 20. As these rolls are positively drivenin opposite directionsthey will grip the pallet and shiftit'longitudlnally so that it will pass under the series of rotatingscraping blades 11 and thence to the pass between the other rolls 19 and20 and from the machine. The distance between shaft 7 and the uppersurface of the pallet is such that the blades, as they rotate, arecaused to just touch the upper surface of the pallet, thus scraping fromsaid surface any accumulations thereon. The speed of the rotation of theblades is such that the pallet will be thoroughly cleaned by them. Asthe plates 22 are yieldingly held, it will be. obvious that the upperrows 20 can move upwardly to a sufficient extent to enable the pallet toreadily pass between the upper and lower rolls.

What is claimed is In a machine for cleaning metallic pallets, a frame,a shaftjournaled above and extending transversely of the frame, aplurality of non-flexible scraping blades connected to and radiatingfrom the shaft between its journals and having blunt workplates securedto the frame adjacent the path of the blades, a pallet engaging rollyieldingly supported by the plates and be low but out of verticalalinement with the shaft, means for adjusting the shaft toward orawayfrom the roll, feed rolls revolubl'e in unison for'feeding a palletbetween said JOHN S. COLLINS.

Witnesses:

FRANK B. OoHsnNRnm'ER, M. E. Gama.

ing edges straight from end to end, spring

